1. Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
2. Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan Texas 77807, United States
3. Comparative Medicine Program, Texas A&M University, College Station, Texas 77843, United States
4. Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, Texas 77843, United States
5. Microscopy and Imaging Center, Texas A&M University, College Station, Texas 77843, United States